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comparison runtime/doc/eval.txt @ 20649:1fa0ace0ba65 v8.2.0878

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patch 8.2.0878: no reduce() function Commit: https://github.com/vim/vim/commit/85629985b71035608a37ba3bde86968481490d46 Author: Bram Moolenaar <Bram@vim.org> Date: Mon Jun 1 18:39:20 2020 +0200 patch 8.2.0878: no reduce() function Problem: No reduce() function. Solution: Add a reduce() function. (closes https://github.com/vim/vim/issues/5481)
author Bram Moolenaar <Bram@vim.org>
date Mon, 01 Jun 2020 18:45:03 +0200
parents 8a2b86a39ef4
children 6ff992bf4c82
comparison
equal deleted inserted replaced
20648:78db823f74d0 20649:1fa0ace0ba65
2677 List items from {expr} to {max} 2677 List items from {expr} to {max}
2678 readdir({dir} [, {expr}]) List file names in {dir} selected by {expr} 2678 readdir({dir} [, {expr}]) List file names in {dir} selected by {expr}
2679 readdirex({dir} [, {expr}]) List file info in {dir} selected by {expr} 2679 readdirex({dir} [, {expr}]) List file info in {dir} selected by {expr}
2680 readfile({fname} [, {type} [, {max}]]) 2680 readfile({fname} [, {type} [, {max}]])
2681 List get list of lines from file {fname} 2681 List get list of lines from file {fname}
2682 reduce({object}, {func} [, {initial}])
2683 any reduce {object} using {func}
2682 reg_executing() String get the executing register name 2684 reg_executing() String get the executing register name
2683 reg_recording() String get the recording register name 2685 reg_recording() String get the recording register name
2684 reltime([{start} [, {end}]]) List get time value 2686 reltime([{start} [, {end}]]) List get time value
2685 reltimefloat({time}) Float turn the time value into a Float 2687 reltimefloat({time}) Float turn the time value into a Float
2686 reltimestr({time}) String turn time value into a String 2688 reltimestr({time}) String turn time value into a String
7963 Also see |writefile()|. 7965 Also see |writefile()|.
7964 7966
7965 Can also be used as a |method|: > 7967 Can also be used as a |method|: >
7966 GetFileName()->readfile() 7968 GetFileName()->readfile()
7967 7969
7970 reduce({object}, {func} [, {initial}]) *reduce()* *E998*
7971 {func} is called for every item in {object}, which can be a
7972 |List| or a |Blob|. {func} is called with two arguments: the
7973 result so far and current item. After processing all items
7974 the result is returned.
7975
7976 {initial} is the initial result. When omitted, the first item
7977 in {object} is used and {func} is first called for the second
7978 item. If {initial} is not given and {object} is empty no
7979 result can be computed, an E998 error is given.
7980
7981 Examples: >
7982 echo reduce([1, 3, 5], { acc, val -> acc + val })
7983 echo reduce(['x', 'y'], { acc, val -> acc .. val }, 'a')
7984 echo reduce(0z1122, { acc, val -> 2 * acc + val })
7985 <
7986 Can also be used as a |method|: >
7987 echo mylist->reduce({ acc, val -> acc + val }, 0)
7988
7989
7968 reg_executing() *reg_executing()* 7990 reg_executing() *reg_executing()*
7969 Returns the single letter name of the register being executed. 7991 Returns the single letter name of the register being executed.
7970 Returns an empty string when no register is being executed. 7992 Returns an empty string when no register is being executed.
7971 See |@|. 7993 See |@|.
7972 7994